ZMPT101B AC Single Phase Voltage Sensor Transformer Module
ZMPT101B AC Single Phase Voltage Sensor Transformer Module
High Precision AC Voltage Measurement Electrical Monitoring Isolation Transformer
The ZMPT101B AC Voltage Sensor Module is a precision voltage measurement module designed to monitor single-phase AC voltage. It uses the ZMPT101B Voltage Transformer, a high-accuracy miniature transformer, to safely step down high AC voltage for measurement by microcontrollers.
This module provides electrical isolation between high voltage and low-voltage circuits, making it ideal for energy monitoring systems, smart meters, and IoT power measurement projects.
Infographic Overview
Basic Specifications
Feature | Details |
Measurement Type | AC Voltage |
Operating Voltaignal | Analog |
Input Voltage Range | Up to ~250V AC |
Sensitivity Adjustment | Yes (Potentiometer) |
Electrical Isolation | Transformer Isolation |
Main Components
Component | Description |
ZMPT101B Voltage Transformer | Steps down AC voltage safely |
Operational Amplifier Circuit | Amplifies sensor signal |
Adjustable Potentiometer | Calibrates output sensitivity |
Output Pins | Sends analog signal to microcontroller |
Pin Configuration
Pin | Function | |
VCC | Power supply (5V) | Analog voltage output |
OUT
Working Principle
The module measures AC voltage using electromagnetic induction.
Step-by-Step Operation
1 AC voltage is applied to the input terminals.2 The ZMPT101B transformer steps down the voltage proportionally.3 The signal is processed by the amplifier circuit.4 The module outputs an analog signal proportional to the AC voltage.5 A microcontroller converts the signal using an ADC to calculate voltage.
Module Working Diagram
AC Power Line'ZMPT101B Transformer'Signal Amplifier Circuit'Analog Output'Microcontroller
Common Applications
Electrical safety systems IoT power monitoring devices
Compatible Microcontrollers
This sensor module works well with:
Arduino Uno
Arduino Nano
ESP32
Raspberry Pi
Voltage Sensor vs Current Sensor
Feature | ZMPT101B | ACS712 |
Measurement | Voltage | Current |
Signal Type | Analog | Analog |
Isolation | Transformer isolation | Hall-effect isolation |
Application | Voltage monitoring | Current monitoring |
Advantages
High measurement accuracy Safe transformer isolation Adjustable sene for smart energy monitoring
Limitations
Measures voltage only (not current) Requires calibration for precise readings AC measurement only (not for DC)
Example DIY Project
Smart Energy Monitoring System
Components
ZMPT101B AC Voltage Sensor Module
Arduino Uno
ACS712 Current Sensor
LCD display or IoT dashboard
Working
Voltage sensor measures AC voltage Current sensor measures current flow Arduino calculates power consumption (Watts) Data can b